package com.example.springcloud.controller;

import com.example.springcloud.commons.CommonResult;
import com.example.springcloud.entities.Payment;
import com.example.springcloud.lb.LoadBalance;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

/**
 * @Author weiHuang.zhu
 * @Date 9/4/2023 下午3:21
 */
@RestController
@Slf4j
public class OrderController {

    @Resource
    private DiscoveryClient discoveryClient;

    @Resource
    private LoadBalance loadBalance;

    //    public static final String PAYMENT_URL = "http://localhost:8081";
    public static final String PAYMENT_URL = "http://PAYMENT-SERVICE";

    @Resource
    private RestTemplate restTemplate;

    @GetMapping("/consumer/payment/create")
    public CommonResult<Payment> create(@RequestBody Payment payment) {
        return restTemplate.postForObject(PAYMENT_URL + "/payment/create", payment, CommonResult.class);
    }

    @GetMapping("/consumer/payment/{id}")
    public CommonResult<Payment> getPayment(@PathVariable("id") Long id) {
        return restTemplate.getForObject(PAYMENT_URL + "/payment/" + id, CommonResult.class);
    }

    @GetMapping(value = "/consumer/payment/lb")
    public String getPaymentLb() {
        List<ServiceInstance> instances = discoveryClient.getInstances("PAYMENT-SERVICE");
        if (instances == null || instances.size() <= 0) {
            return null;
        }
        ServiceInstance serviceInstance = loadBalance.instances(instances);
        URI uri = serviceInstance.getUri();
        return restTemplate.getForObject(uri + "/payment/lb", String.class);
    }
}
